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From: Dave Hansen <dave.hansen@intel.com>
To: Yang Shi <shy828301@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux MM <linux-mm@kvack.org>,
	Yang Shi <yang.shi@linux.alibaba.com>,
	David Rientjes <rientjes@google.com>,
	Huang Ying <ying.huang@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	David Hildenbrand <david@redhat.com>,
	Oscar Salvador <osalvador@suse.de>
Subject: Re: [PATCH 10/10] mm/migrate: new zone_reclaim_mode to enable reclaim migration
Date: Tue, 9 Mar 2021 13:53:13 -0800	[thread overview]
Message-ID: <3cee267e-6a5b-a5a3-698b-4261bef13543@intel.com> (raw)
In-Reply-To: <CAHbLzkqKSOSnyXfqkeW2HDdYk6m+zSZuk5AX1waFVfK-1Vg1=Q@mail.gmail.com>

On 3/8/21 4:24 PM, Yang Shi wrote:
>> Once this is enabled page demotion may move data to a NUMA node
>> that does not fall into the cpuset of the allocating process.
>> This could be construed to violate the guarantees of cpusets.
>> However, since this is an opt-in mechanism, the assumption is
>> that anyone enabling it is content to relax the guarantees.
> I think we'd better have the cpuset violation paragraph along with new
> zone reclaim mode text so that the users are aware of the potential
> violation. I don't think commit log is the to-go place for any plain
> users.
> 

Agreed.  I'll add it to the Documentation/.

  reply	other threads:[~2021-03-09 21:54 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-04 23:59 [PATCH 00/10] [v6] Migrate Pages in lieu of discard Dave Hansen
2021-03-04 23:59 ` [PATCH 01/10] mm/numa: node demotion data structure and lookup Dave Hansen
2021-03-08 23:58   ` Yang Shi
2021-03-04 23:59 ` [PATCH 02/10] mm/numa: automatically generate node migration order Dave Hansen
2021-03-08 23:59   ` Yang Shi
2021-03-04 23:59 ` [PATCH 03/10] mm/migrate: update node demotion order during on hotplug events Dave Hansen
2021-03-09  0:03   ` Yang Shi
2021-03-09 22:07     ` Dave Hansen
2021-03-04 23:59 ` [PATCH 04/10] mm/migrate: make migrate_pages() return nr_succeeded Dave Hansen
2021-03-09  0:05   ` Yang Shi
2021-03-04 23:59 ` [PATCH 05/10] mm/migrate: demote pages during reclaim Dave Hansen
2021-03-09  0:10   ` Yang Shi
2021-03-09 23:05     ` Dave Hansen
2021-03-05  0:00 ` [PATCH 06/10] mm/vmscan: add page demotion counter Dave Hansen
2021-03-09  0:11   ` Yang Shi
2021-03-05  0:00 ` [PATCH 07/10] mm/vmscan: add helper for querying ability to age anonymous pages Dave Hansen
2021-03-09  0:14   ` Yang Shi
2021-03-20  4:05   ` Greg Thelen
2021-03-05  0:00 ` [PATCH 08/10] mm/vmscan: Consider anonymous pages without swap Dave Hansen
2021-03-09  0:17   ` Yang Shi
2021-03-09 23:08     ` Dave Hansen
2021-03-05  0:00 ` [PATCH 09/10] mm/vmscan: never demote for memcg reclaim Dave Hansen
2021-03-09  0:17   ` Yang Shi
2021-03-05  0:00 ` [PATCH 10/10] mm/migrate: new zone_reclaim_mode to enable reclaim migration Dave Hansen
2021-03-09  0:24   ` Yang Shi
2021-03-09 21:53     ` Dave Hansen [this message]
2021-03-09  0:34 ` [PATCH 00/10] [v6] Migrate Pages in lieu of discard Yang Shi
2021-03-09 21:52   ` Dave Hansen
2021-04-01 18:32 [PATCH 00/10] [v7][RESEND] " Dave Hansen
2021-04-01 18:32 ` [PATCH 10/10] mm/migrate: new zone_reclaim_mode to enable reclaim migration Dave Hansen
2021-04-01 20:06   ` Yang Shi
2021-04-10  4:10   ` Wei Xu

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